Nullable entity projection in Entity Framework?

You forgot to include the declaration of your "Message" class but I suspect that the UserID property in that class is not declared as a nullable type. If that is the case, change it from "int" to "int? " (nullable int).

1 I think that this discussion on the MS forums also applies. It probably does the same thing as what this answer suggests. Social.msdn.microsoft.Com/forums/en-US/adodotnetentityframework/… – villecoder Jun 25 '10 at 14:29.

Right, this is 1:n relationship, a message belongs to only 1 user, but a user can have several messages. – liggett78 Sep 26 '08 at 15:57 What does the m. Users property do?

I assumed that was a bunch of User associated with the Message. – leppie Sep 26 '08 at 16:10 OK, m. Users should actually be m.

User, I've changed it in the original question. This propery is an entity pointing to the user that submitted this message. – liggett78 Sep 26 '08 at 16:56.

Since you did an . Include("Users") you should be able to just traverse the User property in the Message object to get the information your want.

Yes, this is the way I do it, except when there is no user associated with the message (remember, UserID is nullable). – liggett78 Sep 26 '08 at 16:57 If there's no user object, then you'd want a null value. What are you looking for instead?

– Orion Adrian Sep 26 '08 at 20:45.

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